<http://schema.org/query-input>
"required name=search_term_string"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.abt.com/product/87231/KitchenAid-20.9-Cu.-Ft.-Panel-Ready-Built-In-Bottom-Freezer-Refrigerator-KBBL206EPA.html>